Sean Martin Long (born 2 May 1995) is an Irish professional footballer who plays as a full-back for League Two club Cambridge United, on loan from Championship club Reading.
Long joined Reading from Irish side Cherry Orchard in 2012. He made his professional debut on 26 August 2014 as a second-half substitute in a 1–0 League Cup win over Scunthorpe United.
On 16 October 2015, Long signed for League Two club Luton Town on an initial one-month loan. He made his debut for the club a day later in a 2–1 away defeat to Crawley Town. Long made four further appearances including three in League Two and one in the FA Cup before having his loan extended on 16 November 2015 until 2 January 2016, continuing to cover for Stephen O'Donnell who was recovering from a double hernia injury. He returned to Reading on 5 January 2016 after making 11 appearances for the club in all competitions.
On 15 March 2016, Long signed for National League club Braintree Town on loan until the end of the season. He made his debut for the club on the same day in a 0–0 draw with Gateshead. Long made nine league appearances for Braintree, helping them to secure a place in the National League play-offs after a 3–0 home win over Altrincham on 30 April 2016 and would face Grimsby Town in the semi-finals over two legs. He featured in the semi-final first leg as Braintree earned a 1–0 away win to gain a slender advantage over their opponents. Long featured again in the semi-final second leg, as Braintree were defeated 2–0 after extra-time and 2–1 on aggregate, ending their hopes of promotion.
On 9 May 2016, Long was one of 15 Reading youth-team players offered a new contract by the club, with confirmation of his new deal being signed coming on 1 July 2016.
On 28 July 2016, following a pre-season trial, Long signed a six-month loan deal with League Two club Cambridge United.
Former Youth Teams
Former Senior Teams
Former Club Staff